All items tagged with LED and Switch (38)

1-06-1998 | The circuit presented in this article enables you to build a software-controlled 8-channel analogue switching unit that will be hard to be...

1-11-1997 | The measurement and control of the moisture content of gases, such as the atmosphere around us, is an integral part of many industries,...

1-07-1996 | The signal-controlled switch actuates or deactuates a.f. equipment, including preamplifiers, power amplifiers, and filters. It is partic...

1-07-1996 | This circuit is another variant of the switch described elsewhere in this issue. Its function is to switch off an audio system if there has...

1-06-1995 | This circuit switches two electrical loads on and off under the control of an acoustic signal. The remote control operates reliably up to...

1-03-1995 | A switch, based on a PIC(1) RISC(2) processor, is described that enables mains-operated equipment, such as a computer, a coffee maker, or...

1-07-1994 | Infra-red remote control units for TVs and video recorders usually have a large number of press-keys to select a staggering variety of fun...

1-01-1994 | The switching unit described here is capable of controlling up to seven mains-powered loads with the aid of commands received via telephon...

1-12-1993 | Nowadays, several manufacturers produce ICs that combine an infra-red receive LED with associate amplifier and demodulator. The Type SFH5...

1-07-1991 | The circiut presented here enables the automatic switching on of outside lighting when its gets dark and, what's more, it does so for a...